Vintage August 1978 Seiko 7549-7010 Tuna Can Quartz Professional 300M Watch

For sale is a Seiko 7549-7010 Tuna Can Quartz Professional 300M Watch

Movement: Quartz

Condition: Used

Strap: Aftermarket rubber

Box: None

Warranty card: None

Manual: None

Serial dates production to August 1978. Service history unknown. Crown screws down correctly, bezel turns and clicks unidirectionally.

Approximate measurements:

Case diameter: 47.2mm (excluding crown)

Lug width: 22mm

Lug to lug: 44.3mm

Thickness: 14.5mm